[glimshe]

Diamonds are a TERRIBLE investment and usually lose around 50% (natural) to 90% (synthetic) on sale. But think like this: if a ring costs 10K natural and 2K synthetic, a 50% loss on natural would correspond to losing 5K. A 90% loss on synthetic would correspond to losing 1.8K. You're still on top big time.

I gave my wife a large synthetic diamond ring for our 15th anniversary and she absolutely loved it.